Flutter CupertinoActivityIndicator – Example

Flutter CupertinoActivityIndicator Widget

Flutter CupertinoActivityIndicator displays an iOS style activity indicator that spins clockwise. It can also be used to display progress of an activity.

Syntax

A simple CupertinoActivityIndicator.

CupertinoActivityIndicator()

Example

Flutter Application with a CupertinoActivityIndicator widget. We do not set any property of this widget, and the default values take affect.

main.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

/// main application widget
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Application';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: const MyStatefulWidget(),
      ),
    );
  }
}

/// stateful widget that the main application instantiates
class MyStatefulWidget extends StatefulWidget {
  const MyStatefulWidget({Key? key}) : super(key: key);

  @override
  State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}

/// private State class that goes with MyStatefulWidget
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        children: const <Widget>[
          SizedBox(height: 30,),
          CupertinoActivityIndicator()
        ],
      ),
    );
  }
}

Screenshot